=x^2+8x+7

Simple and best practice solution for =x^2+8x+7 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for =x^2+8x+7 equation:


Simplifying
0 = x2 + 8x + 7

Reorder the terms:
0 = 7 + 8x + x2

Solving
0 = 7 + 8x + x2

Solving for variable 'x'.

Combine like terms: 0 + -7 = -7
-7 + -8x + -1x2 = 7 + 8x + x2 + -7 + -8x + -1x2

Reorder the terms:
-7 + -8x + -1x2 = 7 + -7 + 8x + -8x + x2 + -1x2

Combine like terms: 7 + -7 = 0
-7 + -8x + -1x2 = 0 + 8x + -8x + x2 + -1x2
-7 + -8x + -1x2 = 8x + -8x + x2 + -1x2

Combine like terms: 8x + -8x = 0
-7 + -8x + -1x2 = 0 + x2 + -1x2
-7 + -8x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-7 + -8x + -1x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(7 + 8x + x2) = 0

Factor a trinomial.
-1((7 + x)(1 + x)) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Solution

x = {-7, -1}

See similar equations:

| 96+96+68+x=360 | | -5v+3=18 | | 3(2a-8)= | | X-10=2-x | | 8y/x^2/4y^4/5x^3y | | 19-3x=-7x+11 | | 65+110+87+x=360 | | 5x^2+25x+5x=0 | | -3(x+7)=48 | | 4(5w-1)-2w= | | 50*c+400=2000 | | 5-6x=-8x+3 | | 50*c+400=650 | | 50*c+400=400 | | 3x+9-7x=6x-2+x | | 24+11w= | | 44-4x=4x | | adf=a+3 | | (6y+8)-(6+5y)=8 | | 1/2x+7=-6 | | 1/4x+4=12 | | 24x+6y+3x-9y= | | -8(-2x-u+2)= | | 2x-15=-21 | | 24x+3y+7x-9y= | | -(y-3x-2)= | | -5*x-7=-7 | | 9p+6=15+8p | | 10x+45=5(2x+9) | | 2(3)-4(5)= | | -5*x-7=-127 | | 7x=1050 |

Equations solver categories